相干光多频带DFT-SOFDM在长距离光纤传输中的应用研究  

Application of the Coherent Optical Multiband DFT-S OFDM to Long Distance Optical Fiber Transmission

作　　者：薛道均[1] 胡荣[1] 黎偲[1] 

机构地区：[1]光纤通信技术和网络国家重点实验室(武汉邮电科学研究院),湖北武汉430074

出　　处：《电力信息化》2012年第10期19-22,共4页Electric Power Information Technology

摘　　要：多频带离散傅里叶变换扩频(DFT-S)技术能够有效降低正交频分复用(OFDM)信号的峰均功率比以及非线性效应。文章细致研究了相干光DFT-SOFDM的计算复杂度和非线性补偿性能,提出了一种450Gb/s双频带DFT-S相干光OFDM系统方案。实验结果表明,随着非线性性能的改善,该方案的系统性能要高于传统的相干光OFDM系统,能够成功地传输9280km。The multiband discrete fourier transform spread （DFT-s） technology can effectively reduce the peak-to-average power ratio and nonlinear effects of orthogonal frequency division multiplexing （OFDM） systems. This paper studies the computational complexity and non-linearity compensation effects of the coherent optical DFT-s OFDM, and proposes a solution of the 450 Gb/s dual-band DFT-S CO-OFDM systems. The experimental results show that the solution is higher than the traditional coherent optical orthogonal frequency division multiplexing systems in terms of system performance with the successful improvement of non-linear effects, and can enhance the transmission distance to 9？280 kilometers.

关 键 词：相干光正交频分复用 离散傅里叶变换扩频 非线性 

分 类 号：TN929[电子电信—通信与信息系统]